Chironomidae Exuviae
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Chironomidae Exuviae
Key: Step 101. Couplet 7 to Subfamilies

101a. Thoracic horn, when present, branched or simple. Anal lobes without anal macrosetae, usually with a taeniate fringe; if fringe absent, either thoracic horn branched, or wing sheaths with nose and tergite II with hook row. Hook row usually present; if absent, thoracic horn branched.

Subfamily Chironominae.

Step 102. Chironominae 1

101b. Thoracic horn, when present, simple. When anal lobes fringed, usually also with setaceous or taeniate anal macrosetae; if without additional macrosetae, hook row II absent and/or lateral margins of at least segments V and VI densely fringed with small setae. (Hook row II present or absent.)

Step 524. Couplet 8 to Subfamilies
Decision path